Carbureter.



H. AUSTIN.

CARBURETER.

APPLICATION TILED JULY 25, 1913.

1,085,008. Patented Jan. 20, 1914,

771 b Skye-A's M MKW i UNITED STATEB PATENT OFFICE.

HERBERT AUSTIN, or BRoMsGnovE, ENGLAND.

Specification .01 Letters Patent.

' christian-rare Patented Jan. 2o, 1-914.

Amman filed July 25, 1913. j serial No. asides.-

To all whom it may concern. 4

'Be it known that I, Hansna'r Aos'rm, a subject of the King of GreatBrit-ain, and residing at Bromsgrove, in the county of 'orccster, England, engineer, have invented certain new and useful Improvements in or Relating to Carburetors for Internal-Combustion Engines, of which the following is a specification. 4 a

This invention relates to the type of carbureterin which a cylindrical valve, withinwhich the jet nojzzle issituated, is'utilized as a throttle for the combustible mixture to the engine and as a control device for the jet nozzle; and has for its main'object, improve-- ments .whereby the best results may be ob-: tained as to the richnessof the mixture for variations in the throttle. opening, and wherebyindependent adjustment of a con-' troldevice for the nozzle may. beeifected without dismantling any portion of the apparatus.

In orderthat the invention may be clearly understood, Iwill now describe a convenient application thereof by referenceto the drawings herewith, of which 2- Figure 1 is a vertical section, taken in the plane indicated by line a: a: of Fig. 2, of a carbureter to which the invention is a plied. Fig. 2 is a vertical section, taken in 1 the plane indicated by line 3/ y of Fig. 1, ex-

cept that the fioat=feed apparatus is shown simply in elevation, and ;.F1g. 3 is a detached View of a detail of the apparatus.

Thecarbureter body A is formed with a cylindrical case A, having a horizontal axis, within which is a hollow cylindrical'valv'e B. Both the case A and the valve B are originally formed open at the sides thereof which in use will be toward the float-feed app'aratus C. The outer side 6 of the valve B is formed closed, and the outer side of the case A is formed witha flange a' against which the outer side, of the valve-B abuts. Thevalve B is formed or provided with a spindle b which passes through the opening of the case A which is'slirrounded by'the flange a thereof. A plug D, which is made rigid with the float-feed case, such as by screwing it upon a nipple c of such cas'e,;is passed sidewise into the valve B; Thevalve is just a turning fitbetween the outer surfaceofthe. plug D and'the inner-surface of .the'case A, and a shoulder d of the plug, coming ?against the open end of the valve, main tains the valve in position endwise, ands shoulder at. of the plug abuts a ainst the corresponding end of the case and is tightened therea'gainst" in ,any convenient manner, such as by bolts passing'through lugs of the case and of the plug. A passage (1 of circular transverse section, and of large area, is formed transversely through the middle of the plug D, being, conveniently, somewhat smaller in diameter at its'middle than at its ends-and enlarging gradually from its middle to'the ends, as clearlyshown by Fig. l, and when the valve. is in its fully open position, as shown, ports b b of the valve register, respectively, with the inlet and outlet ends of the passage dfiand put such 'endsin'full communicatio'n'with correspending openings of the' case A for the passage of inlet air and of combustible mixture to the engine, respectively.- -The liquid 'fuel nozzle E stands up from the bottom of vthe middle of the passage (1 to about half valve g, is screwed axially through the slider F, and this in has a common axis with the liquid fuel passes also through a plug'H which closes an opening through the top of the case A through which the pin passes, and the pin is formed at its outerend-with a milled head 9 for convenience. in manipulating it. The

pin G passes through a slot. b which is formed through the wall of the valve B to allow of the valve being turnedi notwithstanding the passage therethrough'of the pin G. e The inner surface b of the portion ofthe valve B through which the slot 6-. is'fformed,

is shaped, as shown, so-th'at asthe" val es turned in the direction of'the arrowlFlg.

- pin G, formed 'at its lower end use needlenozzle E. Thepin G 1), namely inthe-direction tocut oif mixture from the engine, this 'surfa'cfii-"press'ing against a correspondingly-shapedsuriace of the outer end'oftheslider-F, will-moire the slider inward, and thereby cane the:-' 'bedle I lv P els were es e m-.

' vantage of the use ofthe inv has a turning diameter of the slider, asshown by through the passage d? in 20.

of, the opening of any degree to which the valve. has been turned, the opening such as to give. the best. result in working.

' Preferably, {the portion of the slider against which the surface' of the valve bears is made considerabl narrower than .the main Fig. 2. The-openings. b and I) through the wall oi the valve B are so-fo'rined that a's'the 7 valve is turned from its position shown by.

Fig. 1. in the direction of the arrow (Fig.

be restricted, and,-as angles to the'axis of the-valve, the turning of. the valve tends" to insure a flow of air tion upwardfrom' the t'ure 'outlet,-crossin the middle of the petssage-way atabout't e level-of the'top of the nozzle, which constitutes "an incidental 'ad-' "utionu a The cam-shaped surface I) of .the interior ofthe valve B,..is conveniently formed-by cutting a slot-through. the wall of the'valv'e -.and forming rabbets :b slot, and then letting-in at the ends pt the to this slot at strip of metalb', which has the required cam surface formed at its inner face, .withthe 'endsofthe' strip fitted down; within the rabbets, andfixingthe stripto thevalve by screws b.. .The strip, with-it's screws, is shown detached by Fig. 3, which represents it asseen looking down thereupon when m the positic;.- shown, .by Fig. I. The slot 6*, to clear the pin G, is

formed'through the stri I Having fully descri ed .niy invcnlion,

a hat I claim and desire to secure by Letters latent,1s:- g Y 1. In a carbureter foran internal cornbustion engine, a-fixed plug, --a transverse passage-through'such plug, a fuel. nozzle situated "within the plug, a cylindrical throttle valve which ,has a turning fit around the plug, I openings through the -valve, cylindricalcase within which the valve has a turning fit; an inlet and an outlet opening through the wall of the case, device which is carried by means whereby as thevalve is turnedin a direction to throttle the mixture it operates the control device, substantiallyas .and for the-purposesset forth. Y 1 2; 'In a carbureterfor'aninternal combus- 'tion'engine, a fixed .plug'having a horizontal axis, a transverse passage the nozzle, a cylindrical throttle valve fit around'the plug, openings through the valve," afixed cylindrical case stance of the plug. and; communicating with 5 within which the valve has a turning fit, an

the nozzle E; and this, surface. 6 is so shaped as-to insure that for of. the'case,

of the nozzle E .will be 'forth.

.uated within the plug,-a al-ve which is closed endwise over the plu .ingv fit around the .the valve, av fixed a 'slanting direc- I aninlet to. the mix-- 7 drical throttle valve "which around the plug, openings th valve is .a turning and means whereby as the valve is adirection to throttle-the mixture it opcr-' a fuel control the plug, and

I sage through such plug, through such plug, a. fuel nozzle situated; within-and carried by v the plug, a fuel passage-formed'in the 'su-b .plug,

cylindrical case within which the valve has which inlet and an outlet opening through the wall a' fuel control carried by the plug, and means whereby as the valve is, turned in a direction to throttle the mixture it operates the control device, substantially as and for the purposes ;set

3. In a carbureter for an internal cornbus tion-engine, a fixed plug, atransverse passage, through such plug,

cylindrical throttle at one vend and-passed andhas itself a turn p ug, openingsthrough cylindrical case within -which the valve has a turning fit, "an inlet and an outlet opening through the wall" oi the case,"a fuel controldevice which is car. ried by the'plug, and means wheiebyas the valve is turned in a direction to throttle the imixtair'e. itj operatesthe control device, substantially as and-for the ,purposes' set' forth. AQIna carbureter-for an internal, combustion engine, a float-feed apparatus, .a fixed plug which is rigid with the h float valve case, e .t rough such plu a within the plug, acyfiin has a turning fit a, transverse passe fuel nozzle-situate rough the valve, a fixed cylindrical case within which the fit,'-a ninlet and an outlet opening through the wall of the case, a fuel control device which is carried by the plug,

' turned in ates the control device, substantially as and for the -pur'poses set forth. 1 '7 v 1 5, In a .carbureter for an internal combustion engine,a fixed plug, a transverse passage through such plug, a fuel nozzle situated -within. the plug, a cylindrical throttle valve which has .a turning fit around the plug,

openings through the valve, a fixed cylindrical base within which the valve hasa turning. fit, an inlet and an outlet opening through the wall ably fitted within-the-plug, a fuel control valve carried by such device,

act 'with the outer end of said device an move it 1nward',and. -a spring against the force of whichjthe device is moved inward by the. thrott1e-valve, substantially as and for thepurpos'es set forth.

. 6. Ir; a carbureter for an internal combustio'nf engine, affixed.- plug, atransverse pasa fuel nozzle situated withinthe plug, .a cylindrical throttle valve which hasa turning. fitzaround the openings throughthe valve, a fixed a turning. fit, an inlet and an outlet opening through the wall of the case, a device 511d ably fitted-withi the plug, valve on the inner end of a pin iwhich is device which" is a fuel nozzle sit-- of fthe-case, a device slid--- a cam-shaped surface of the throttle valve adapted to 00; v

a fuel control.

screwed through said device and the Outer end of which is exposed and adapted to be readily turned, and means whereby as the throttle valve is turned in a direction to tionengine, a fixed plug having a horizontal axis, a substantially horizontal transverse 1 passage through such plug, a fuel nozzle standing up Within the middle of the passage through the plug to about half the height of such passage, a cylindrical throttle valve which has a turning fit around the plug, openings through the valve situated in such poually closed one of them sitions in relation to one another that as the valve is turned in a directionto throttle the mixture the ends of the passage are gradfrom the lower sidethereof and the other from the upper side thereof, with the result that the air flowing through the passage passes in an inclined direct-ion across the middle of the passage at about the level of the top of the nozzle, substantially as and for the purposes set forth. In witness whereof I have hereunto signed my name this 16th day of July 1913 in the presence of two subscribing witnesses.

HERBERT AUSTIN.

Witnesses: V

ERNEST HARPER, ROBERT G. Gnovns. 

